Citation | Zameer, Z., S. Mohsin, A. Hasnain, A. Maqbool and K.A. Malik. 2020. Influence of explant sources on in vitro callogenesis and regeneration in maize (Zea mays L.). Pakistan Journal of Agricultural Research, 33(4): 917-925. DOI | http://dx.doi.org/10.17582/journal.pjar/2020/33.4.917.925